for i= 1 to scenematerials.count do

(

if classof scenematerials[i] == MultiMaterial  then 

  (

for m = 1 to (scenematerials[i].materiallist.count) do

(

if classof scenematerials[i].materiallist[m] == VrayMtl  then

(

scenematerials[i].materiallist[m].reflection_lockGlossiness = true

)

)

  )

if classof scenematerials[i] == VrayMtl  then

(

scenematerials[i].reflection_lockGlossiness = true

)

)